9月30日lighttpd 1.4.20版本发布了。lighttpd不用多介绍了，现在非常流行的轻量级Web服务器，提供良好的Ruby on Rails，PHP和Python的FastCGI/SCGI运行方式的支持。
lighttpd1.4.20版本是1.4.x系列的最新的维护版本，修复了从1.4.19以来大量的小bug，也是目前lighttpd最稳定最好的版本，推荐升级。这个版本比较关注的bug修复是一些HTTP不规范的400请求造成的内存泄漏问题以及SSL处理的问题造成的DOS攻击。以下是详细更新记录：
引用
* Fix mod_compress to compile with old gcc version (#1592)
* Fix mod_extforward to compile with old gcc version (#1591)
* Update documentation for #1587
* Fix #285 again: read error after SSL_shutdown (thx marton.illes@balabit.com) and clear the error queue before some other calls (CVE-2008-1531)
* Fix mod_magnet: enable “request.method” and “request.protocol” in lighty.env (#1308)
* Fix segfault for appending matched parts if there was no regex matching (just give empty strings) (#1601)
* Use data_response_init in mod_fastcgi x-sendfile handling for response.headers, fix a small “memleak” (#1628)
* Don’t send empty Server headers (#1620)
* Fix conditional interpretation of core options
* Enable escaping of % and $ in redirect/rewrite; only two cases changed their behaviour: “%” => “”, ”$$” => ”$”
* Fix accesslog port (should be port from the connection, not the “server.port”) (#1618)
* Fix mod_fastcgi prefix matching: match the prefix always against url, not the absolute filepath (regardless of check-local)
* Overwrite Content-Type header in mod_dirlisting instead of inserting (#1614), patch by Henrik Holst
* Handle EINTR in mod_cgi during write() (#1640)
* Allow all http status codes by default; disable body only for 204,205 and 304; generate error pages for 4xx and 5xx (#1639)
* Fix mod_magnet to set con->mode = p->id if it generates content, so returning 4xx/5xx doesn’t append an error page
* Remove lighttpd.spec* from source, fixing all problems with it 😉
* Do not rely on PATH_MAX (POSIX does not require it) (#580)
* Disable logging to access.log if filename is an empty string
* Implement a clean way to open /dev/null and use it to close stdin/out/err in the needed places (#624)
* merge spawn-fcgi changes from trunk (from @2191)
* let spawn-fcgi propagate exit code from spawned fcgi application
* close connection after redirect in trigger_b4_dl (thx icy)
* close connection in mod_magnet if returned status code
* fix bug with IPv6 in mod_evasive (#1579)
* fix scgi HTTP/1.* status parsing (#1638), found by met@uberstats.com
* [tests] fixed system, use foreground daemons and waitpid
* [tests] removed pidfile from test system
* [tests] fixed tests needing php running (if not running on port 1026, search php in env[PHP] or /usr/bin/php-cgi)
* fixed typo in mod_accesslog (#1699)
* replaced buffer_{append,copy}_string with the _len variant where possible (#1732) (thx crypt)
* case insensitive match for secdownload md5 token (#1710)
* Handle only HEAD, GET and POST in mod_dirlisting (same as in staticfile) (#1687)
* fixed mod_secdownload problem with unsigned time_t (#1688)
* handle EAGAIN and EINTR for freebsd sendfile (#1675)
* Use filedescriptor 0 for mod_scgi spawn socket, redirect STDERR to /dev/null (#1716)
* fixed round-robin balancing in mod_proxy (#1715)
* fixed EINTR handling for waitpid in mod_fastcgi
* mod_{fast,s}cgi: overwrite environment variables (#1722)
* inserted many con->mode checks; they should prevent two modules to handle the same request if they shouldn’t (#631)
* fixed url encoding to encode more characters (#266)
* allow digits in [s]cgi env vars (#1712)
* fixed dropping last character of evhost pattern (#161)
* print helpful error message on conditionals in global block (#1550)
* decode url before matching in mod_rewrite (#1720)
* fixed conditional patching of ldap filter (#1564)
* Match headers case insensitive in response (removing of X-{Sendfile,LIGHTTPD-*}, catching Date/Server)
* fixed bug with case-insensitive filenames in mod_userdir (#1589), spotted by “anders1”
* fixed format string bugs in mod_accesslog for SYSLOG
* replaced fprintf with log_error_write in fastcgi debug
* fixed mem leak in ssi expression parser (#1753), thx Take5k
* hide some ssl errors per default, enable them with debug.log-ssl-noise (#397)
* do not send content-encoding for 304 (#1754), thx yzlai
* fix segfault for stat_cache(fam) calls with relative path (without ’/’, can be triggered by x-sendfile) (#1750)
* fix splitting of auth-ldap filter
* workaround ldap connection leak if a ldap connection failed (restarting ldap)
* fix auth.backend.ldap.bind-dn/pw problems (only read from global context for temporary ldap reconnects, thx ruskie)
* fix memleak in request header parsing (#1774, thx qhy)
* fix mod_rewrite memleak/endless loop detection (#1775, thx phy – again!)
* use decoded url for matching in mod_redirect (#1720)
* Fix mod_extforward to compile with old gcc version (#1591)
* Update documentation for #1587
* Fix #285 again: read error after SSL_shutdown (thx marton.illes@balabit.com) and clear the error queue before some other calls (CVE-2008-1531)
* Fix mod_magnet: enable “request.method” and “request.protocol” in lighty.env (#1308)
* Fix segfault for appending matched parts if there was no regex matching (just give empty strings) (#1601)
* Use data_response_init in mod_fastcgi x-sendfile handling for response.headers, fix a small “memleak” (#1628)
* Don’t send empty Server headers (#1620)
* Fix conditional interpretation of core options
* Enable escaping of % and $ in redirect/rewrite; only two cases changed their behaviour: “%” => “”, ”$$” => ”$”
* Fix accesslog port (should be port from the connection, not the “server.port”) (#1618)
* Fix mod_fastcgi prefix matching: match the prefix always against url, not the absolute filepath (regardless of check-local)
* Overwrite Content-Type header in mod_dirlisting instead of inserting (#1614), patch by Henrik Holst
* Handle EINTR in mod_cgi during write() (#1640)
* Allow all http status codes by default; disable body only for 204,205 and 304; generate error pages for 4xx and 5xx (#1639)
* Fix mod_magnet to set con->mode = p->id if it generates content, so returning 4xx/5xx doesn’t append an error page
* Remove lighttpd.spec* from source, fixing all problems with it 😉
* Do not rely on PATH_MAX (POSIX does not require it) (#580)
* Disable logging to access.log if filename is an empty string
* Implement a clean way to open /dev/null and use it to close stdin/out/err in the needed places (#624)
* merge spawn-fcgi changes from trunk (from @2191)
* let spawn-fcgi propagate exit code from spawned fcgi application
* close connection after redirect in trigger_b4_dl (thx icy)
* close connection in mod_magnet if returned status code
* fix bug with IPv6 in mod_evasive (#1579)
* fix scgi HTTP/1.* status parsing (#1638), found by met@uberstats.com
* [tests] fixed system, use foreground daemons and waitpid
* [tests] removed pidfile from test system
* [tests] fixed tests needing php running (if not running on port 1026, search php in env[PHP] or /usr/bin/php-cgi)
* fixed typo in mod_accesslog (#1699)
* replaced buffer_{append,copy}_string with the _len variant where possible (#1732) (thx crypt)
* case insensitive match for secdownload md5 token (#1710)
* Handle only HEAD, GET and POST in mod_dirlisting (same as in staticfile) (#1687)
* fixed mod_secdownload problem with unsigned time_t (#1688)
* handle EAGAIN and EINTR for freebsd sendfile (#1675)
* Use filedescriptor 0 for mod_scgi spawn socket, redirect STDERR to /dev/null (#1716)
* fixed round-robin balancing in mod_proxy (#1715)
* fixed EINTR handling for waitpid in mod_fastcgi
* mod_{fast,s}cgi: overwrite environment variables (#1722)
* inserted many con->mode checks; they should prevent two modules to handle the same request if they shouldn’t (#631)
* fixed url encoding to encode more characters (#266)
* allow digits in [s]cgi env vars (#1712)
* fixed dropping last character of evhost pattern (#161)
* print helpful error message on conditionals in global block (#1550)
* decode url before matching in mod_rewrite (#1720)
* fixed conditional patching of ldap filter (#1564)
* Match headers case insensitive in response (removing of X-{Sendfile,LIGHTTPD-*}, catching Date/Server)
* fixed bug with case-insensitive filenames in mod_userdir (#1589), spotted by “anders1”
* fixed format string bugs in mod_accesslog for SYSLOG
* replaced fprintf with log_error_write in fastcgi debug
* fixed mem leak in ssi expression parser (#1753), thx Take5k
* hide some ssl errors per default, enable them with debug.log-ssl-noise (#397)
* do not send content-encoding for 304 (#1754), thx yzlai
* fix segfault for stat_cache(fam) calls with relative path (without ’/’, can be triggered by x-sendfile) (#1750)
* fix splitting of auth-ldap filter
* workaround ldap connection leak if a ldap connection failed (restarting ldap)
* fix auth.backend.ldap.bind-dn/pw problems (only read from global context for temporary ldap reconnects, thx ruskie)
* fix memleak in request header parsing (#1774, thx qhy)
* fix mod_rewrite memleak/endless loop detection (#1775, thx phy – again!)
* use decoded url for matching in mod_redirect (#1720)